PSYC 220 Lecture Notes - Functional Magnetic Resonance Imaging, Ct Scan, Wilder Penfield
Document Summary
Rem sleep: can use eeg to study event-related potentials (erp), which measure neural responses to specific events, eg. Functional" images (taken with fmri) are superimposed with anatomical" images (taken with a conventional mri approach: takes samples seconds apart to image how the brain changes while engaged with various kinds of tasks. Hindbrain: medulla: heart and respiration, thoroughfare for sensory/motor nerve tracts, pons: regulate sleep, dreaming respiration, coordinate movements, cerebellum: muscular movement (particularly reflexive/automatic/rapid) coordination, learning and memory. Midbrain: reticular formation: important for consciousness and attention, ascending portions sends input to higher regions, descending portion admits or blocks signals, relay centers for vision and audition, eg. Limbic system: nucleus accumbens: important for behaviours associated with reward/motivation (involved with dopamine release, hippocampus: forming/retrieving memories, navigation, amygdala: organizes emotional response patterns (particularly aggression/fear) The cerebral cortex: consists of the outermost layer of the human brain, and is the source of what we consider out.
